| ADP | Advanced Packaging [engl.] Microchip-Kontaktierung innerhalb des Gehäuses |
| APT | Advanced Package Tool [engl.] Software für verschiedene Linux-Distributionen |
| RFP | Request For Packaging |
| EPF | European Packaging Federation Seine-Saint-Denis |
| TAP | Telcom Advantage Packaging |
| TPM | Transport Packaging Materials |
| EFIP | European Federation of Interconnection and Packaging |
| APSC | Application Packaging Solution Center [engl.] Zentrale Stelle für die Verteilung von Software |
| TWAIN | Tool Without Any Interesting Name |
| VT | Visualization Tool |
| ETS | EIB Tool Software |
| HIT | Health Information Tool |
| GIFT | GNU Image Finding Tool |
| EMT | Embedded Management Tool |
| FCT | Firewall Configuration Tool |
| NDT | Network Design Tool |
| DDT | Dynamic Debugging Tool |
| CoST | Copenhagen SGML Tool |
| SWAT | Samba Web Administration Tool |
| Tcl | Tool command language Werkzeugbefehlssprache, ist eine OpenSource-Skriptsprache |
| DCT | Database Configuration Tool |
| BET | Biodiversity Evaluation Tool [engl.] Werkzeug zum Nachweis der Artenvielfalt |
| WEFT | Web Embedding Fonts Tool [Microsoft] |
| VUIT | Visual User Interface Tool [DEC] |
| IQT | Integrated Query Tool [engl.] |
| ART | Automated Reasoning Tool [engl.] |
| HEAT | Helpdesk Expert Automation Tool |
| VAT | Video / Visual Audio Tool |
| SMIT | System Management Interface Tool [IBM] |
| SIFT | Stanford Information Filtering Tool |
| RATS | Rough Auditing Tool for Security |
| PCTE | Portable Common Tool Environment |
| ISDT | Integrated Systems Development Tool |
| OPCAT | Object Process CASE Tool |
| ATAG | Authoring Tool Accessibility Guidelines [engl.] |
| SATAN | Security Administrator's Tool for Analyzing Networks |
| CATT | Computer Aided Test Tool [engl.] Tool der SAP zur Automatisierung betriebswirtschaftlicher Prozesse |
| SAINT | Security Administrators Integrated Network Tool |
| BLAST | Basic Local Alignment Search Tool [engl.] |
| CDIF | CASE Tool Data Interchange Format [engl.] Spezifikation für verteilte Datenbanken |
| CECIMO | European Committee for Co-operation of the Machine Tool Industries |
| AOD | Advanced Optical Disc |
| AOS | Advanced Operating System |
| APB | Advanced Peripheral Bus [engl.] |
| RHAD | Red Hat Advanced Development [Laboratories] |
| NAS | National Advanced Systems |
| ATS | Advanced Training Solution |
| AS | Advanced Server [engl.] |
| ASB | Advanced System Bus [engl.] |
| AT | Advanced Technology [engl.] PC-Industrie-Standard von Microsoft |